Realizable Single Photon Beam Splitter Based on Classical-Assisted Cyclic Transition of InGaAs/GaAs Quantum Dot Coupled to the T-Splitter Silver Nanowire

We have proposed a constructive scheme of a realizable single photon beam splitter with a three-level InGaAs/GaAs quantum dot placed in the turning point of two waveguides and, on the basis of a real space approach, have theoretically investigated transport properties of propagating single photons in the quantum system with one input and two outputs. Our considerations showed that reflection and transfer rate spectra could be efficiently adjusted by the classic control field, the frequency of the incident field, detunings, and coupling strengths between the quantum dot (QD) and waveguides, which gives us possibilities to design quantum devices, such as single photon transistor, a nano-photonic switch, a nano-beam splitter, and a directional coupler. The results reported in this paper could be utilized for the building nano-plasmonic integrated circuits and quantum networks, which have great potential applications in quantum information processing.